CN88100947A

CN88100947A - Switch valve controller

Info

Publication number: CN88100947A
Application number: CN88100947A
Authority: CN
Inventors: 加拉赫格·厄布尔特
Original assignee: Gti Jalaherg Earbult Co
Current assignee: Gti Jalaherg Earbult Co
Priority date: 1987-02-16
Filing date: 1988-02-15
Publication date: 1988-08-31
Also published as: EP0279071A2; JPS6435104A; EP0279071A3; IT8785510A0; US4799644A; IT1210556B

Abstract

A kind of Effector that is used for the operating switch valve, this device comprises a supporting mass, the cylinder that wherein has an energy two-way push tooth bar at least, tooth bar and a gear engagement, this gear and the central shaft of this device are concentric and can be its rotation by a pair of freewheel transmission, freewheel rigidly alternately along different directions with and the engagement of the joining ring of central shaft, be used to make between the gear of Effector and the axle with the member of cylinder operation and do motion to axial.According to the difference of phase mutual edge distance between the freewheel, the central shaft of this device can not be lockable or can manual tune when having pneumatic signal.

Description

The present invention relates to be used for the Effector of master cock valve.

Effector is the device that switch valve is carried out remote control.A kind of Effector of known type has a tooth bar, and it normally forms on the axle of a double-action pneumatic piston, and it is on transmission of movement to and its meshed gears, and gear is connected with the Control Shaft of switch valve.The opening and closing of valve depend on that entering cylinder promotes piston, thereby promote to be fixed on the compressed-air actuated direction of the tooth bar on the piston shaft.

The shortcoming of this Effector is that size is huge, in owing to pipeline in the high equipment that needs very big opening and closing moment of pressure especially like this.In fact, in this case, the diameter that strengthens the gear that is connected with the Control Shaft of valve can reach the purpose that obtains big opening and closing moment.This must add the stroke of macro-axis as a result, thereby needs long piston.As a kind of replacement scheme, gear and axle sleeve diameter can remain unchanged, and strengthen but gear diameter is then necessary, and this will increase overall dimension eventually.

Another shortcoming of this Effector is, no matter still is in closing closed procedure in opening process, all can not realize the damping of valve.

Another kind of known Effector is the diaphragm operated device.This Effector has a metal body, has an elastic diaphragm that it is separated into mutually independently two chambers in the body, and pressurized air enters these chambers.The axle and the barrier film of master cock valve are rigidly connected.By pressurized air alternately being fed the opening and closing that two chambers are realized switch valve.

Though this Effector has solved the damping problem of valve, by correctly regulating pressure and the back pressure in the chamber and then on the elastic diaphragm, can obtain damping at an easy rate, it can not solve the excessive problem of overall dimension.Overall dimension is still huge, and especially like this, because because its structural feature, it all produces very big back pressure when opening and closing when used valve is flat valve.In addition, in this case, if valve is damped, then any variation in pressure in the pipeline all means the variation of the aperture of valve own, and the result causes changes in flow rate, and this may bring serious problems to equipment.

Also having a kind of known Effector is the Effector that has pneumatic clutch and tooth bar.In this Effector, the axle of metal drum and master cock valve fuses.Outside at drum is installed a clutch with one heart.Clutch is made up of the cavity ring of a rectangular cross section, and the outer surface of cavity ring is flexible and is covered with the friction resistant material consistent with internal diameter.

When the pressure of cavity ring was eliminated, clutch itself broke away from and also to become drum idle running, and drum stops, and tooth bar is experienced displacement and clutch turns over same angle along the opposite direction that rotates in the past, got back to its initial position.This moment, circulation began once more, till valve is fully closed or opens.

Obvious this Effector can not solve the huge problem of size, but it can realize the optimal damping of valve.In fact in this case, very big if desired unlatching or close moment also has only by adopting huge drum and the clutch of size just can obtain.

Another shortcoming of above-mentioned several Effectors is that they need the very long operating time.

The objective of the invention is to eliminate above-mentioned shortcoming.

One of intended purposes that will reach by enforcement of the present invention is, when comparing with other the known Effectors with same capacity, the comparatively compact and size of the structure of manipulator reduces, especially piston one tooth bar assembly.As a result, a kind of Effector can be obtained,, bigger opening and closing moment can be produced though its size is littler than other Effectors of identical characteristics.

Another its intended purposes is to realize a very strong valve damping, and can make its variation in certain discrete range.

Also have an its intended purposes to be to realize a kind of like this Effector, under situation about breaking down, can make the control lever shaft of valve pin or make in contrast it can manually-operable as requested, its selection be decided on accident prevention requirement or other reasons.

The above-mentioned purpose that to introduce in detail and other purposes below, can be accomplished by implementing a kind of Effector that is used for the master cock valve, it comprises a supporting mass, a kinematic pair of being made up of rack and pinion wherein is housed, it is characterized in that promotion by means of the annular piston that belongs to opposed equal pneumatic piston, said gear is made axial concentric motion with respect to the axle of control valve, and pneumatic piston is contained in the Effector, is rigidly connected with the Pneumatic method promotion and with Effector.The feature of this Effector is that also portion is supported with two freewheels within it, and each freewheel can be alternately links with the axle of master cock valve, thus carry-over moment clockwise or counterclockwise.

According to the present invention, in a kind of most preferred embodiment, the axial relative movement between the central shaft of gear and Effector is to realize by one of two pistons that alternately promote to be contained in the cylinder separately in the Effector body with one heart.In another kind of embodiment, a single double-acting cylinder concentric with axle is arranged.In addition, according to the operation requirement, a pair of freewheel that is connected with gear can be arranged to leave mutually such distance, so that the two separation and be in opposed state when they are static.Or rather, if two freewheels arrange leave mutually far away, make between the two distance greater than the height of ring or greater than and the central shaft all-in-one-piece ring of Effector between distance, then the central shaft of Effector can rotate freely by the manual operating handwheel when not having pneumatic signal.On the other hand, if the distance between two freewheels less than the height of ring or less than and the central shaft all-in-one-piece ring of Effector between distance, then central shaft pins when not having pneumatic signal, thereby can prevent any motion.

In addition, if a throttle valve is opened or closed to the axle of Effector, then this valve will directly be connected with axle, so that any rotation of the latter is all corresponding with the rotation of throttle valve.

On the other hand, if gate valve of Effector control, then the central shaft of Effector should have a concentric female thread that forms in axle itself, and it moves axially a leading screw that fuses with above-mentioned gate valve.

By means of the enforcement of the Effector of master cock valve according to the present invention, first advantage that obtains is an economical advantage, and it has reduced cost and has reduced size.

Second advantage is when comparing with some Effector to reduce compressed-air actuated consumption with a kind of like this Effector, this when comparing with the Effector of band clutch with same characteristic especially like this.

Other 26S Proteasome Structure and Function details will describe in detail in the introduction of three most preferred embodiments of the present invention, and these embodiments only provide as an illustration, and are not intended to limit its scope, and are illustrated with accompanying drawing, wherein:

Fig. 1 represents the sectional view according to Effector of the present invention;

The sectional view that meshes between the rack and pinion of the Effector of Fig. 2 presentation graphs 1;

Fig. 3 represents the another kind of embodiment according to Effector of the present invention;

Fig. 4 represents another embodiment according to Effector of the present invention.

With reference to above-mentioned accompanying drawing, the composition of Effector comprises that flange is fixed on the supporting mass with screw 4 by the supporting mass 1 of

flange

2 and 3 sealings.

Be formed with the seat that slides for the side direction piston 5 that is connected with tooth bar 7 and 6 in the supporting mass 1.Because the pressurized air effect that enters chamber 8 or 9 by the hole on closure fange 10 and 11 13 and 14, above-mentioned tooth bar are alternately to the right or to left dislocation.

Above-mentioned

flange

10 and 11 is fixed on the supporting mass 1 by means of screw 12, and

piston

5 and 6 has retracting

spring

35 and 36 simultaneously.

As seen from Figure 1, the Control Shaft 15 of operating switch valve runs through the total length of the supporting mass 1 of Effector, and it is supported and be equipped with for manually operated handwheel 16 in the end by bearing 37 and 38.

In supporting mass 1,, respectively carry retracting

spring

82 and 85 in axial sliding with axle 15 concentric two annular pistons 17 and 18 that have opposite one another.By means of the sealing on the circle 19 acquisition lateral sliding faces.

By the hole in

top flange

2 and 3 22 and 23, pressurized air enters the annular cavity 20 and 21 of sealing, and they are constituting cylinder owing to what piston 17 and 18 were arranged.

Annular sliding piston 17 is connected with cover 24 with 26 by means of bearing 25 respectively with 18, thereby they constitute a shaft coupling, and it can slide cover 24 and piston along the axis of supporting mass 1, rotates relatively around this axis simultaneously.

Force to be installed with the

freewheel

27 and 28 that has inconsistent rotation and become one with cover by means of back-up ring 29 and 30 in cover 24, gear 31 overlapping 24 fixed outside simultaneously, it and tooth bar 7 mesh and obtain its motion from tooth bar.

When pressurized air enters a chamber, for example enter at 8 o'clock, the Horizontal displacement that tooth bar 7 produces thereupon makes gear 31 rotations, if neither one is to be under the pressure in chamber 20 and 21, then it does not transmit any rotation to axle 15.

In fact in this case, gear 31 makes cover 24 rotations of fixing gear on it, and freewheel at the cover internal fixation, so freewheel can slide on neck bush 32.

Lining 32 also is fixed on the axle 15 slidably, and it only plays stripper loop 33 and 34, so as with

surpass freewheel

27 and 28 itself height and distance make

freewheel

27 and 28 connections.If thereby in chamber 20 and 21, do not have pressure not to be passed to axle 15 with regard to not having rotation.

On the other hand, when pressurized air enters such as during chamber 20, moving down of annular piston 17 makes freewheel 27 connect with ring 34, and ring 34 links regularly with axle 15 thereby 15 rotations of feasible axle, so the rotation of gear 31 is identical with the direction that rotatablely moves of freewheel transmission.

Rotation is interrupted when piston 6 arrives its end of travel.This moment, a mortor operated valve was got involved, and give off pressurized air from

chamber

8 and 20, and retracting

spring

82 and 35 was taken back its home position to annular piston 17 and tooth bar 7 respectively.

In order to carry out the rotation transmission of axle 15 along clockwise and counterclockwise both direction, freewheel must can transmit opposite moving direction as above-mentioned being mounted to, and they alternately mesh with ring 33 or 34.

Even under the situation of the automatic Control Failure of Effector, this Effector also can proper functioning.In fact, when not having pressure in the Effector, freewheel is got back to their central position and is made gear from throwing off from coupled situation with axle 15, and axle 15 can manually-operable then, thereby can carry out the manually opened and closing operation of valve.

In sum as can be seen, if side direction cylinder 8 of Effector or 9 and corresponding inner cavity chamber 20 or 21 be under the pressure, axle 15 is rotated a certain angle, thereby make the valve that is connected with above-mentioned axle obtain adjusting.Thereby, in order to obtain by the complete opening of the valve of Effector operation or to close rotation fully, need send series of identical instruction, so that obtain axle 15 along unidirectional a series of rotations.For example, if the unlatching of the valve that links to each other with Effector is by making cylinder 8 and chamber 20 place the pressure control of getting off, if each instruction can make axle 15 rotations 15 degree, then be readily appreciated that, for the valve complete opening of closing at first, needs are provided six instructions, and axle 15 can revolve altogether and turn 90 degrees like this.Importantly to point out emphatically, first that first rotation in correspondence instruct countercylinder 8 and chamber 20 provided after, in order to obtain follow-up rotation, can in chamber 20, keep-up pressure and only discharge the pressure in the cylinder 8 and infeed new pressure once more.In fact, when pressure during from cylinder 8 discharging, the retracting spring 35 that acts on the piston 6 makes tooth bar 7 return its initial position, but because the intervention of freewheel 27, gear 31 counterrotating does not thereupon pass to axle 15, and freewheel does not transmit opposite moving by the engagement along opposite sense of rotation in this case.

Be appreciated that in addition by the stroke of appropriate change tooth bar 7 or the travel relationships between the rack and pinion 31, can obtain all desirable dampings of opening process and pass closed procedure at an easy rate.

An alternative embodiment of the invention is shown in Fig. 3.As can be seen from the figure, gear 50 by means of bearing 52 with double-acting 51 concentric connections of annular piston are arranged in this case.Pressurized air through via

hole

53,54 enter

chamber

55,56 and act on upper surface 57 or lower surface 58 on.When pressure from

chamber

55 or 56 when discharging

spring

59 or 60 make piston recover its home position.

In this embodiment of the present invention, be in respectively and can both be mounted to and slide with respect to the Control Shaft 66 of switch valve with the lining 61 between the coupling ring that connects 62 and 63 of

freewheel

64 and 65, can slide with respect to

freewheel

64 and 65 again, its length is less than the length sum of freewheel 64 and 65.So when annular piston 51 was in neutral, promptly when

chamber

55 and 56 did not have pressure, two freewheels all partly connected with

ring

62 and 63, so that gear 50 and axle 66 link all the time.

The direction of transfer that is mounted to them owing to freewheel is opposite mutually, so if there is not pressure in the Effector, thereby manually running shaft 66 manual operating valves are impossible.

On the other hand, when one of two

chambers

55 or 56 are under the pressure, then piston 51 is with respect to its neutral displacement, so that a single freewheel will connect with one of draw-

barring

62 or 63, another will be with respect to lining 61 location simultaneously.In this case, thereby a lateral displacement of tooth bar 67 is passed to 66 1 rotations of axle that gear 50 is passed to the control switch valve, and this rotation will last till that tooth bar arrives till its end of travel.If axle 66 directly connects the adjustings of the valve of being handled, then process can continue like this, as described in the last embodiment.

In fact, based on so far about the situation that embodiment introduced of Effector shown in Figure 3, this operation equipment is different from the Effector of Fig. 1, because the Effector of Fig. 1 can manually-operable when not having pneumatic signal, and the Effector of Fig. 3 pins under same state.Only to carry out under the situation of special equipment that in check manipulation rather than manual tune are target an advantage that Here it is.On the other hand, if be target, then lining 61 can be lengthened to the height of two

freewheels

64 and 65 with Effector that can manually-operable Fig. 3.

As seen from Figure 3, the Effector of representing with sectional view allows valve to make shearing motion rather than does to regulate rotation.In fact, the female thread 68 that cooperates of leading screw 69 with axle 70 upper ends is arranged in the lower end of the axle of control switch valve, spools 70 the lower end switch valve of ining succession.This cooperation between leading screw and the female thread and the existence that is arranged in respectively at the key 71 of the trough 72 of the flange 74 of Effector and

axle

70 and 73 make rotatablely moving of axle 66 become the straight line motion of axle 70.

Another embodiment of the present invention is shown in Fig. 4, among the figure as can be seen gear 100 be connected with apply piston 101, piston 101 by means of bearing 102 and the axle 103 concentric linking.The pressurized air that enters

chamber

112 or 113 by

hole

114 or 115 acts on the lower surface 116 or upper surface 117 of two-way ram 101, promotes piston and moves up or down.

The Control Shaft 104 of switch valve has a hollow end 105, and it has a groove 106, and inserting pin 107 in the groove it links the clutch 108 of

freewheel

109 and 110 with axle 103.Axle 103 makes clutch 108 and freewheel engagement owing to axial motion is done in the effect of piston 101.So axle 103 by gear 100 driven rotary, makes axle 104 rotations of control switch valve again then by groove 106 and pin 107.So same rotatablely moving that obtains with regard to the device that has obtained with Fig. 1.

Because the height of clutch 108 is less than lining 111, so when

chamber

112 and 113 does not have pressure, Effector will be in neutral, because clutch 108 does not neither mesh with freewheel 110 with freewheel 109 yet in this state.In this case, as the situation of the Effector among Fig. 1, the axle 104 of Effector can manually-operable shown in Figure 4, thus can manual operating valve.If lining 111 is made the height less than clutch 108, then Effector can be realized self-locking when not having pneumatic signal.

In sum, the Effector of the control switch valve of three of by the agency of kinds of structural types has been realized its intended purposes.The present invention also can have other different forms, even can take the change of structural principle, but still does not exceed scope of the present invention.

Claims

1, a kind of Effector that is used for the master cock valve, it comprises a supporting mass, laterally having can be along the cylinder (8,9) of a tooth bar of axis two-way push (7) of oneself, above-mentioned tooth bar and a gear (31; 50; 100) engagement, the central shaft (15 of this gear and above-mentioned Effector; 66; 104) also its rotation can be passed to above-mentioned axle with one heart, it is characterized in that:

Gear (31 at above-mentioned Effector; 50; 100) hollow cylinder pars intramuralis has a pair of freewheel (27,28; 61,62; 109,110), they alternately along different directions with and the joining ring (33,34 of central shaft of Effector; 62,63; 108) be meshed, make each freewheel in two freewheels can be along the rotation of the transmission gear of central axis of one of two different directions fore-and-aft motion, this rotation itself is kinetic by tooth bar, is useful in above-mentioned Effector between the gear that makes Effector and the central shaft and makes the member of motion to axial.

2, Effector as claimed in claim 1, it is characterized in that: gear (31) can move vertically, it and two opposed pistonss (17,18) link, two that piston forms in the supporting mass by Effector and concentric cylindrical chamber (20 with said gear, 21) motion in, by pressure being entered hold two chambers (20 of above-mentioned piston, 21) one of cause above-mentioned piston action, make Gear axial displacement, thereby one of freewheel (27,28) and axle (15) joining ring one of (32,33) with Effector are meshed.

3, Effector as claimed in claim 2, it is characterized in that two freewheels (27,28) along the overall dimensions of the longitudinal axis less than with joining two rings (32 of the central shaft (15) of Effector, 33) distance between, thereby central shaft (15) can be by means of a handwheel (16) manually rotation freely when Effector is in its position of rest.

4, Effector as claimed in claim 2, it is characterized in that: two freewheels (27,28) along the overall dimensions of the longitudinal axis greater than with joining two rings (32 of the central shaft (15) of Effector, 33) distance between, thereby when Effector is in its position of rest, can prevent central shaft (15) rotation.

5, Effector as claimed in claim 1, the two-way longitudinal movement that it is characterized in that gear are to obtain by means of the action with a double-acting cylinder that is formed centrally on the supporting mass of Effector.

6, Effector as claimed in claim 5, it is characterized in that two freewheels (64,65) along the overall dimensions of the longitudinal axis less than with the joining ring gear of central shaft (66) (62,63) of Effector between distance, above-mentioned axle can rotate freely when Effector is in its position of rest.

7, Effector as claimed in claim 5, it is characterized in that: two freewheels (64,65) along the overall dimensions of the longitudinal axis greater than with joining two rings (62 of the central shaft (66) of Effector, 63) distance between can prevent above-mentioned axle rotation when Effector is in its position of rest.

8, as the described Effector of above-listed any one claim, it is characterized in that: the axle (15 of Effector; 66) parts of opening and closing valve are rotated.

9, as the described Effector of claim 1 to 7, the axle (15 that it is characterized in that Effector, 66) the concentric female thread (68) that forms of portion is within it arranged, it makes leading screw (69) do axial motion, and this leading screw is inserted in female thread the inside and links with the axle (70) that makes valve make the parts of shearing opening and closing or this leading screw is the part of this axle (70).

10, Effector as claimed in claim 1, it is characterized in that from having two freewheels (109 along the different direction combination, 110) gear (100) is realized by means of motion clutch (108) to the transmission of movement of the axle (104) of Effector, this clutch alternately makes and own links with the engagement of one of freewheel and with another axle (103), axle (103) in central shaft (104) and with housing at Effector on the piston (101) of a double-acting cylinder forming link.

11, Effector as claimed in claim 10, it is characterized in that: two freewheels (109,110) distance between is greater than the height of clutch (108), thereby the central shaft (104) of Effector can rotate freely when Effector is in its position of rest.

12, Effector as claimed in claim 10, it is characterized in that: two freewheels (109,110) distance between is less than the height of clutch (108), thereby can prevent central shaft (104) rotation of Effector when Effector is in its position of rest.

13, Effector as claimed in claim 10 is characterized in that: the axle of above-mentioned Effector (104) directly makes the parts rotation of opening and closing valve.

14, the Effector shown in claim 10, the axle (104) that it is characterized in that Effector has the concentric female thread that forms of portion within it, it makes a leading screw do axial motion, and this leading screw is inserted in female thread the inside and links with the axle that makes valve make the parts of shearing opening and closing or leading screw is this a part.